<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    .box {
      margin: 100px auto;
      width: 610px;
      height: 610px;
      /* border: 2px solid red; */
      position: relative;
      transition: transform 15s;
      /* border-radius: 50%; */
    }

    .box:hover {
      transform: rotate(3600deg);
    }

    .topLeft {
      width: 300px;
      height: 300px;
      position: absolute;
      top: 0;
      left: 0px;
      background-color: antiquewhite;
      border-top-right-radius: 100%;
      border-bottom-left-radius: 100%;
      overflow: hidden;
    }

    .topRight {
      top: 0px;
      right: 0;
      width: 300px;
      height: 300px;
      position: absolute;
      background-color: blueviolet;
      border-top-left-radius: 100%;
      border-bottom-right-radius: 100%;
    }

    .bottomLeft {
      bottom: 0px;
      left: 0;
      width: 300px;
      height: 300px;
      position: absolute;
      background-color: burlywood;
      border-top-left-radius: 100%;
      border-bottom-right-radius: 100%;
    }

    .bottomRight {
      bottom: 0;
      right: 0px;
      width: 300px;
      height: 300px;
      position: absolute;
      background-color: greenyellow;
      border-top-right-radius: 100%;
      border-bottom-left-radius: 100%;
    }
  </style>
</head>

<body>
  <div class="box">
    <div class="topLeft"></div>
    <div class="topRight"></div>
    <div class="bottomLeft"></div>
    <div class="bottomRight"></div>
  </div>
</body>

</html>